Four polymorphisms of IL-27p28 gene (rs181206, rs26528, rs17855750, and rs40837) and three of the Epstein-Barr virus-induced gene 3 (EBI3) (rs428253, rs4740, and rs4905) were genotyped in 375 Mexican patients with UC and 1599 Mexican Mestizo healthy unrelated individuals.
Under recessive model, the IL-27p28 rs17855750 polymorphism was associated with decreased risk of developing UC (OR = 0.27, 95% CI: 0.06–1.13, P = 0.031).
Under recessive models, the EBI3 rs428253 (OR = 0.54, 95% CI: 0.29–0.99, P = 0.035), rs4740 (OR = 0.60, 95% CI: 0.36–1.01, P = 0.046) and rs4905 (OR = 0.59, 95% CI: 0.35–1.01, P = 0.043) were associated with decreased risk of developing UC.
IL-27 polymorphisms might play a protective role for the development of UC in the Mexican population.